Answer:
It is a group of words that can function as a complete sentence, consisting of a subject and verb and expressing a complete thought
1. The deep pond is DANGEROUS for small children.
2. We use sugar to SWEETEN tea.
3. My father found EMPLOYMENT in a bank.
4. Money does not always bring HAPPINESS.
5. The two girls came to an AGREEMENT which made them both happy.
6. I saw the most AMAZING sunset over the sea.
7. The computer was a great INVENTION.
8. There was a serious COLLISION on the highway.
9. Did you get PERMISSION to leave school early?
10. The family had made a RESERVATION at the restaurant.
Hope this helps! Please let me know if I'm wrong :)
I think the answer to this question is that it paved way to the popularity of mystery fiction. Also, a significant result of Doyle's detective mysteries is their focus on crime investigation and paying attention to details that would help in crime-fighting - which encouraged awareness during his time about it.